#region Copyright (c) 2006-2009 Widgetsphere LLC, All Rights Reserved
//--------------------------------------------------------------------- *
//                          Widgetsphere  LLC                           *
//             Copyright (c) 2006-2009 All Rights reserved              *
//                                                                      *
//                                                                      *
//This file and its contents are protected by United States and         *
//International copyright laws.  Unauthorized reproduction and/or       *
//distribution of all or any portion of the code contained herein       *
//is strictly prohibited and will result in severe civil and criminal   *
//penalties.  Any violations of this copyright will be prosecuted       *
//to the fullest extent possible under law.                             *
//                                                                      *
//THE SOURCE CODE CONTAINED HEREIN AND IN RELATED FILES IS PROVIDED     *
//TO THE REGISTERED DEVELOPER FOR THE PURPOSES OF EDUCATION AND         *
//TROUBLESHOOTING. UNDER NO CIRCUMSTANCES MAY ANY PORTION OF THE SOURCE *
//CODE BE DISTRIBUTED, DISCLOSED OR OTHERWISE MADE AVAILABLE TO ANY     *
//THIRD PARTY WITHOUT THE EXPRESS WRITTEN CONSENT OF WIDGETSPHERE LLC   *
//                                                                      *
//UNDER NO CIRCUMSTANCES MAY THE SOURCE CODE BE USED IN WHOLE OR IN     *
//PART, AS THE BASIS FOR CREATING A PRODUCT THAT PROVIDES THE SAME, OR  *
//SUBSTANTIALLY THE SAME, FUNCTIONALITY AS ANY WIDGETSPHERE PRODUCT.    *
//                                                                      *
//THE REGISTERED DEVELOPER ACKNOWLEDGES THAT THIS SOURCE CODE           *
//CONTAINS VALUABLE AND PROPRIETARY TRADE SECRETS OF WIDGETSPHERE,      *
//INC.  THE REGISTERED DEVELOPER AGREES TO EXPEND EVERY EFFORT TO       *
//INSURE ITS CONFIDENTIALITY.                                           *
//                                                                      *
//THE END USER LICENSE AGREEMENT (EULA) ACCOMPANYING THE PRODUCT        *
//PERMITS THE REGISTERED DEVELOPER TO REDISTRIBUTE THE PRODUCT IN       *
//EXECUTABLE FORM ONLY IN SUPPORT OF APPLICATIONS WRITTEN USING         *
//THE PRODUCT.  IT DOES NOT PROVIDE ANY RIGHTS REGARDING THE            *
//SOURCE CODE CONTAINED HEREIN.                                         *
//                                                                      *
//THIS COPYRIGHT NOTICE MAY NOT BE REMOVED FROM THIS FILE.              *
//--------------------------------------------------------------------- *
#endregion
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using Widgetsphere.Generator.Models;
using Widgetsphere.Generator.Common.GeneratorFramework;
using Widgetsphere.Generator.Common.Forms;
using System.Collections.Generic;

namespace Widgetsphere.Generator.Forms
{
  internal partial class RelationCollectionForm : CollectionEditorForm
  {
    public RelationCollectionForm()
    {
      InitializeComponent();
    }

    public RelationCollectionForm(Table parentTable, ReferenceCollection referenceCollection)
      : this()
    {
      _referenceCollection = referenceCollection;
      OriginalReferenceCollection = new ReferenceCollection(parentTable.Root, parentTable, ReferenceType.Relation);
			OriginalReferenceCollection.AddRange((ICollection)referenceCollection);
      _parentTable = parentTable;
      this.LoadList();
    }

    #region Class Members

    private ReferenceCollection OriginalReferenceCollection = null;
    protected ReferenceCollection _referenceCollection = null;
    protected Table _parentTable = null;

    #endregion

    #region Form Events

    #endregion

    #region Property Implementations

    private ModelRoot Root
    {
      get { return (ModelRoot)this.ReferenceCollection.Root; }
    }

    private ReferenceCollection ReferenceCollection
    {
      get { return _referenceCollection; }
    }

    private Table ParentTable
    {
      get { return _parentTable; }
    }

    #endregion

    #region Methods

    private void LoadList()
    {
      try
      {
        int index = lstMembers.SelectedIndex;

        //Load the relations into the list
        lstMembers.Items.Clear();

				List<Reference> delList = new  List<Reference> ();
        foreach(Reference reference in this.ReferenceCollection)
        {
					if ((reference != null) && (reference.Object != null))
					{
						Relation relation = (Relation)reference.Object;
						if (relation.ParentTableRef.Object == this.ParentTable)
							lstMembers.Items.Add(reference.Object);
						else System.Diagnostics.Debug.Write("");
					}
					else delList.Add(reference);
        }

				foreach (Reference r in delList)
				{
					this.ReferenceCollection.Remove(r);
				}

        if((0 <= index) && (index < lstMembers.Items.Count))
          lstMembers.SelectedIndex = index;
        else if(index >= 0)
          lstMembers.SelectedIndex = lstMembers.Items.Count - 1;
        else if(lstMembers.Items.Count != 0)
          lstMembers.SelectedIndex = 0;
      }
      catch(Exception ex)
      {
        throw;
      }
    }

    #endregion

    #region Button Handlers

    protected override void OnUpButtonClick(object sender, EventArgs e)
    {
      base.OnUpButtonClick(sender, e);
    }
		
    protected override void OnAddButtonClick(object sender, EventArgs e)
    {
      //Add a relation to the master Relations collection and add a reference to this reference collection
      Relation relation = this.Root.Database.Relations.Add();
      relation.ParentTableRef = (this.ParentTable).CreateRef();
      relation.PropertyChanged += new PropertyChangedEventHandler(RelationPropertyChanged);
      this.ReferenceCollection.Add(relation.CreateRef());
      lstMembers.Items.Add(relation);
      lstMembers.SelectedIndex = lstMembers.Items.Count - 1;
    }

    protected override void OnCancelButtonClick(object sender, EventArgs e)
    {
			//TODO: Cleanup
      this.DialogResult = DialogResult.Cancel;
      this.Close();
    }

    protected override void OnDownButtonClick(object sender, EventArgs e)
    {
      base.OnDownButtonClick(sender, e);
    }

    protected override void OnDeleteButtonClick(object sender, EventArgs e)
    {
      Relation relation = (Relation)lstMembers.SelectedItem;
      ((ModelRoot)relation.Root).Database.Relations.Remove(relation);
      this.LoadList();
    }

    protected override void OnOKButtonClick(object sender, EventArgs e)
    {
      this.DialogResult = DialogResult.OK;
      this.Close();
    }

    #endregion

    #region RelationPropertyChanged

    private void RelationPropertyChanged(object sender, PropertyChangedEventArgs e)
    {
      this.LoadList();
    }

    #endregion

  }
}
